, : Coryell, H. N.; Embich, J. R. (1937). The Tranquilla Shale (Upper Eocene) of Panama and its foraminiferal fauna. Journal of Paleontology. 11: 289-305. Plate , Fig.
dataset number: FEU-1022501
Citation: , : Coryell, H. N.; Embich, J. R. (1937). The Tranquilla Shale (Upper Eocene) of Panama and its foraminiferal fauna. Journal of Paleontology. 11: 289-305. Plate , Fig